3D-Ultrashort Echo Time (UTE) sequences with 3D-kossh
ball trajectory suffer from k-space trajectory deviations and ghosting
artifacts due to hardware imperfections. The gradient system transfer function (GSTF),
completely characterizes the gradient system as a linear and time-invariant
(LTI) system. In this study, the GSTF was measured only using standard scanner
hardware and was used to correct deviated trajectories in image reconstruction.
This results in diminished ghosting artifacts and improve image quality.

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